ZipCodeCore · jeanvalentin51 · Dec 10, 2019 · Dec 10, 2019 · Dec 10, 2019 · Dec 10, 2019
diff --git a/.idea/.gitignore b/.idea/.gitignore
diff --git a/.idea/SQL.LetsGetTogether.iml b/.idea/SQL.LetsGetTogether.iml
diff --git a/.idea/misc.xml b/.idea/misc.xml
diff --git a/.idea/modules.xml b/.idea/modules.xml
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
diff --git a/answers/exercise1.sql b/answers/exercise1.sql
@@ -0,0 +1,4 @@
+SELECT *
+FROM Enrolments AS E
+LEFT JOIN Students AS S
+ON E.STUDENT_ID=S.STUDENT_ID;
diff --git a/answers/exercise2.sql b/answers/exercise2.sql
@@ -0,0 +1,4 @@
+SELECT *
+FROM Enrolments
+INNER JOIN STUDENTS
+ON Enrolments.StudentID=Students.StudentID;
diff --git a/answers/exercise3.sql b/answers/exercise3.sql
@@ -0,0 +1,4 @@
+SELECT *
+FROM Enrolments
+LEFT JOIN STUDENTS
+ON Enrolments.StudentID=Students.StudentID;
diff --git a/answers/exercise4.sql b/answers/exercise4.sql
@@ -0,0 +1 @@
+SELECT COUNTRY, COUNT(COUNTRY) AS STUDENT_PER_COUNTRY FROM STUDENTS GROUP BY COUNTRY;
diff --git a/answers/exercise5.sql b/answers/exercise5.sql
@@ -0,0 +1 @@
+SELECT COUNTRY, COUNT(COUNTRY) AS STUDENTS_PER_COUNTRY FROM STUDENTS GROUP BY COUNTRY ORDER BY COUNTRY ASC;
diff --git a/answers/exercise6.sql b/answers/exercise6.sql
@@ -0,0 +1 @@
+SELECT COUNTRY, COUNT(COUNTRY) AS STUDENTS_PER_COUNTRY FROM STUDENTS GROUP BY COUNTRY HAVING STUDENTS_PER_COUNTRY > 10 ORDER BY STUDENTS_PER_COUNTRY;
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		SELECT COUNTRY, COUNT(COUNTRY) AS STUDENT_PER_COUNTRY FROM STUDENTS GROUP BY COUNTRY;